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Device for checking for lumen passage and method of producing device for checking for lumen passage

A technology for confirming devices and manufacturing methods, which can be applied in surgery, in vivo radio detectors, etc., and can solve problems such as unreliable confirmation of passability, difficulty in controlling material dissolution time, and inability to ensure complete dissolution time, so as to achieve reliable lumen passability , the effect of prolonging the dissolution path

Active Publication Date: 2009-12-09
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, according to Patent Documents 1, 2, etc., it is desirable to set the complete dissolution time of the capsule for lumen passage confirmation (the time for which the capsule shape can be maintained) to be, for example, 100 hours More than, or 1 day to 7 days, but it depends on the enteric material, it is difficult to control the dissolution time of the material
In the case of the exemplified enteric-coated material, etc., the dissolution time is limited to about one day in view of the size of the lumen passability confirmation capsule, and the desired complete dissolution time cannot be ensured at present.
Even for normal people, the passage time of capsules for lumen passage confirmation usually takes 2 to 3 days, and no matter what the subject is, the certain time required for confirmation of passability cannot be ensured, and passability cannot be confirmed reliably

Method used

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  • Device for checking for lumen passage and method of producing device for checking for lumen passage
  • Device for checking for lumen passage and method of producing device for checking for lumen passage
  • Device for checking for lumen passage and method of producing device for checking for lumen passage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0105] refer to figure 1 and figure 2 The lumen passage confirmation capsule according to Embodiment 1 of the present invention will be described. figure 1 It is a schematic perspective view showing a configuration example of the lumen passage checking capsule 10 according to the first embodiment, figure 2 Is its central longitudinal section side view.

[0106] Roughly speaking, the lumen of the first embodiment is confirmed by confirming that the capsule 10 has a dome-shaped capsule shape having hemispherical dome-shaped convex portions 11a, 11b at both ends in the longitudinal axis direction. The shape and size are the same or substantially equal to those of a capsule endoscope used for inspection and observation of the lumen of the gastrointestinal tract, etc., and can be introduced into the body of a subject. Such a dome-shaped capsule-shaped lumen is confirmed to be composed of a non-dissolving portion 12 , a dissolving portion 13 , a second dissolving portion 14 , a...

Deformed example 1

[0116] image 3 It is a schematic longitudinal sectional side view showing a lumen passability checking capsule 10A of Modification 1. FIG. In the lumen of Modification 1, the non-dissolving portion 12 forming the surface layer of the dome-shaped capsule shape is provided with elasticity by confirming the capsule 10A. At this time, if image 3As shown in (a), the ends of the notched portion of the non-dissolving portion 12 are displaced in height along the radial direction so as not to overlap each other, and the dissolving portion 13 is filled. adopt to figure 2 The situation is based on such as image 3 The lumen passage confirmation capsule 10A of modification 1 formed as shown in (a), when the lumen passage confirmation capsule 10A stays in the small intestine and the linear dissolving part 13 dissolves, the second dissolving part 14 inside dissolves and flows out to the small intestine. When the outside is hollowed out, the presence of the dissolving part 13 is used ...

Deformed example 2

[0118] Figure 4 It is a schematic perspective view showing a lumen passage checking capsule 10B according to Modification 2. In the lumen confirmation capsule 10B of Modification 2, the dissolving part 13 is provided in a helical line on the non-dissolving part 12 along the circumferential direction around the longitudinal axis of the dome-shaped capsule shape. Using the lumen passage confirmation capsule 10B of Modification 2, when the lumen passage confirmation capsule 10B stays in the small intestine, the spiral dissolving part 13 dissolves, and the inner second dissolving part 14 dissolves and flows out to the outside to become hollow, use The lumen maintaining the dome-shaped capsule shape due to the presence of the dissolving portion 13 confirmed that the rigidity of the non-dissolving portion 12 of the capsule 10B was lowered so that the dome-shaped capsule shape could not be maintained, and it was crushed in the axial direction, making it easier to pass through the re...

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Abstract

An object is to provide a lumen passability checking device that can definitely maintain a capsule shape for a predetermined time necessary to confirm patency. A soluble portion 41 provided in a first insoluble portion 42, which maintains the capsule shape, is divided with an insoluble portion 63 to form a dissolution route 62 that progresses from a part of a surface to inside. By forming the dissolution route 62 longer, a time taken by the soluble portion 41 to dissolve in the lumen is structurally made longer, which maintains the capsule shape for an extended time.

Description

technical field [0001] The present invention relates to lumen passage confirmation for confirming in advance whether a capsule medical device can pass through an internal organ such as the small intestine by introducing it into the body of a subject before actual use of a capsule medical device such as a capsule endoscope. The device and lumen pass confirms the method of fabrication of the device. Background technique [0002] In recent years, capsule medical devices such as capsule endoscopes that pass through the lumen of a subject to observe, inspect, treat, or treat the lumen have been proposed and put into practical use. In the use of such a capsule medical device, when there is an abnormality such as a stenosis in a relatively narrow lumen organ of the subject, such as the small intestine, the swallowed capsule medical device may remain in the stenosis. Such problems in the lumen. [0003] For such a problem, a capsule for confirming passage of a lumen (a pre-test ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B1/00A61B5/07
Inventor 河野宏尚横井武司
Owner OLYMPUS CORP
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